Open ChrisRackauckas opened 7 years ago
There is support for Jacobians already via auto-differentiation. The usage is as follows:
using ApproxFun
import ApproxFun: DualFun
N = u->u''+u^2
u0 = Fun(exp)
J = N(DualFun(u0)).J
How would you expect this to be exposed?
Thanks. We'll just make an override in the correct place to allow this to work. This just needs DiffEqDiffTools.jl to be completed then.
For the direct usage of
Fun
, stiff methods can't be used because the Jacobians cannot be calculated.